JPH0920189A - Movable wire harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reliably prevent the damage and disconnection of a flat harness caused by being sandwiched by a door by inserting the flat harness into an inserting hole in a condition of forming a sagging part in a housing box, and arranging a tensile elastic member to energize the flat harness in the housing box to one side. SOLUTION: When a back door 2 is opened by being rotated backward with a hinge 5 as the center, since a flat harness 4 is pulled backward, the flat harness 4 in a housing box 7 is delivered outside. At this time, a spring 10 elongates by being pulled, and looseness is not caused in the flat harness 4 between the back door 2 and the housing box 7. When the back door 2 is closed by being rotated forward, since the spring 10 energizes the flat harness 4 forward, the flat harness 4 is not damaged and disconnected by being sandwiched between the back door 2 and the housing box 7 or a car body 3 since it loosens at actuating time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire harness for doors installed in a door of an automobile or the like. The present invention relates to a movable wire harness that can reliably prevent such problems.

[0002]

2. Description of the Related Art Conventionally, a wire harness for a door arranged in a door portion of an automobile or the like has been disclosed in Japanese Utility Model Laid-Open No.
Various types are known as disclosed in Japanese Patent Publication No. 957, etc. As shown in FIG. 12, the inner panel 54 of the door frame 53 of the door 52 is provided with a plurality of working holes 55, and a harness pull-out groove 57 that is open to the hinge attachment end side 56 thereof. Also, the door frame 5
Electrical components such as actuators built in the door 52 side are arranged in the internal space of the connector 3.
8 is fixed to the inner panel 54. A flat wire harness for the door is installed on the cover plate 59 facing the door frame 53, and the work hole 55 is provided.
A waterproof sheet 60 is attached at a position opposed to.

This door wire harness comprises a trunk line 51 and a plurality of branch lines 51a and 51b.
A door-side connector 17 is provided at the tip of 1. This door side connector 17 is connected to a vehicle body side connector 18 provided at the tip of a vehicle body side wire harness 19, as shown in FIG. The connector 61 provided at the tip of the branch line 51b is fixed to the cover plate 59.
Further, among the circuit parts of the main line 51 and the branch line 51b, at least the main line 51 is formed as a flat harness by molding a plurality of covered electric wires in parallel, and the branch connection to the main line 51 is performed by one joint absorption unit 62. It is being appreciated.

The slack portion 6 bent in a U-shape is provided on the connection end side of the main line 51 with the vehicle body side wire harness 19.
3 are provided. The slack portion 63 has a length within a dimension allowable range capable of absorbing the elongation generated when the door 52 is opened. In addition, instead of the slack portion 63, as shown in FIG.
There is also one provided with a bellows molding portion 64 as shown in FIG.

In the above structure, as shown in FIG. 12, after arranging the trunk wire 51 and the branch wires 51a and 51b of the door wire harness on the cover plate 59, a slack portion is provided and the cover plate 59 is attached to the inner panel 54. The door 52 is assembled as shown in FIG.
After the hinge connection with the vehicle body 3, the door side connector 17 and the vehicle body side connector 18 are connected to connect the door wire harness 51 to the vehicle body side wire harness 19 and complete the connection with the vehicle body 3 side. . When the door 52 is opened to the side of the vehicle body 3 in this state, the slack portion 63 is stretched, so that no tensile force acts on the flat harness 51. Then, when the door 52 is closed again, the slack portion 63 returns to its original shape.

[0006]

However, the door 5
When 2 is closed, if the closing speed is high or the flat harness 51 is old, the slack portion 63 and the bellows molding portion 64 do not always return to their original shapes.
Then, there is a problem that the flat harness 51 is sandwiched between the door 52 and the vehicle body 3 and is damaged or broken. Further, the slack portion 63 or the bellows molding portion 64, the penetrating portion on the mounting end side 56 of the door 52, and the vehicle body side wire harness 1
There is a problem that the work efficiency is lowered because it is necessary to attach a waterproof member such as a grommet to the penetrating portion of the vehicle body of 9.

The object of the present invention has been made in view of the above-mentioned problems, and it is possible to reliably prevent damage and disconnection caused by being sandwiched between a door and a vehicle body by urging with a constant tension.
An object of the present invention is to provide a movable wire harness that does not require the work of penetrating the wire harness to the door side and the vehicle body side.

[0008]

The above object of the present invention is to provide a slack portion near a hinge of a flat harness which is pierced between an opening / closing body which is rotatably supported and opened / closed by a hinge connection and a vehicle body. In the wire harness having the above, a storage box having a front insertion hole and a rear insertion hole in the traveling direction of the vehicle body is provided on either the vehicle body or the opening / closing body, and the flat harness forms a slack portion in the storage box. It can be achieved by a movable wire harness, which is characterized in that a pulling elastic member that is inserted into the insertion hole in this state and biases the flat harness in the storage box to one side is attached.

Further, the above object can be achieved by providing the bellows molding portion on at least a part of the flat harness.

Further, the above object of the present invention is to provide a wire harness having a slack portion near a hinge of a flat harness which is pierced between an opening / closing body which is rotatably supported and opened / closed by a hinge connection and a vehicle body. In addition, a storage box having a front insertion hole and a rear insertion hole in the traveling direction of the vehicle body is provided on either the vehicle body or the opening / closing body, and the flat harness is inserted with the slack portion formed inside the storage box. A roller-shaped fixed bar that is inserted into the hole and supported by one bent part of the slack in the storage box, and a roller-shaped movable bar that can move back and forth in the storage box are provided to store the movable bar. This can be achieved by a movable wire harness characterized in that an elastic member for urging one side in the box is provided.

The above object can be achieved by the elastic member being a tension or compression spring.

Further, the above object can be achieved by the movable bar being held so as to be movable back and forth by a guide portion provided facing the side portion of the storage box.

Further, the above object can be achieved by fixing one end of the flat harness bent in the storage box.

[0014]

[Operation] According to the movable wire harness of the above-mentioned configuration according to the present invention, the storage box having the front insertion hole and the rear insertion hole in the traveling direction of the vehicle body is provided on either the vehicle body or the opening / closing body. At the same time, the flat harness is inserted into the insertion hole in a state where the slack portion is formed in the storage box, and a tension elastic member for urging the flat harness in the storage box to one side is provided. Therefore, since the waterproof penetrating work of the flat harness at the opening / closing portion between the opening / closing body and the vehicle body is eliminated, the work efficiency in the manufacturing process can be improved.

Further, since a tension elastic member for urging the flat harness in the storage box to one side is provided, it is sure that the flat harness is slackened and caught in the opening / closing part or broken when the opening / closing body is closed. To be prevented. Also, in the closed state of the opening and closing body, the elastic member is in the state of returning to the original,
Since the flat harness is not pulled more than necessary, the durability and reliability of the flat harness can be improved.

Further, when the bellows molding portion is provided on at least a part of the flat harness, the flat harness itself expands, so that the amount of tension of the flat harness by the elastic member can be small, which further improves the durability and reliability of the flat harness. Can be improved.

Further, according to the movable wire harness having the above-mentioned structure according to the present invention, the storage box having the front insertion hole and the rear insertion hole in the traveling direction of the vehicle body is provided on either the vehicle body or the opening / closing body. At the same time, the flat harness is inserted into the insertion hole with the slack in the storage box.
A roller-shaped fixed bar supported in one bent portion of the slack portion in the storage box and a roller-shaped movable bar movable back and forth in the storage box are provided, and the movable bar is provided in one side in the storage box. An elastic member for urging is provided. Therefore, since the waterproof penetrating work of the flat harness at the opening / closing portion between the opening / closing body and the vehicle body is eliminated, the work efficiency in the manufacturing process can be improved. Further, since the movable bar moves along with the feeding of the flat harness when the opening / closing body is opened, the elastic member urged by the flat harness requires only a small tensile force, which further improves the durability and reliability of the flat harness. Can be improved.

Further, since the elastic member is a tension or compression spring, tension is always applied to the flat harness via the movable bar, and when the opening / closing body is opened / closed, the flat harness is loosened and caught. Since it is not caught, the durability and reliability of the flat harness can be improved.

Further, since the movable bar is held so as to be movable back and forth by the guide portion provided so as to face the side portion of the storage box, the movable bar moves more smoothly and the flat harness is twisted. Since it does not occur, the durability and reliability of the flat harness can be further improved.

Further, since one end of the flat harness folded in the storage box is fixed, the movement of the movable bar with respect to the feeding of the other end of the flat harness can be reduced, so that the reliability of the flat harness is further improved. You can

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a case where an embodiment of a movable wire harness of the present invention is applied to a back door will be described in detail with reference to FIGS. 1 to 11. 1 is an exploded perspective view showing a first embodiment of a movable wire harness of the present invention, FIG. 2 is a sectional view of FIG. 1, and FIG. 3 is an operation explanatory view of FIG.

As shown in FIGS. 1 and 2, in the movable wire harness 1 of the present embodiment, a back door 2 which is an opening / closing body which is rotatably supported by a hinge connection and is opened and closed, and a vehicle body 3. A flat harness 4 in which a plurality of covered electric wires are arranged in parallel and bound in a band shape with an elastic material is arranged. The flat harness 4 has a slack portion 6 near the hinge 5, and a storage box 7 having a front insertion hole 8 and a rear insertion hole 9 in the traveling direction of the vehicle body 3.
Is provided on the vehicle body 3 side. Further, the flat harness 4 is inserted into the storage box 7 in a state where two bent portions 6a are formed, and the tension spring 10 which is an elastic member for biasing the flat harness 4 in the storage box 7 forward is provided. It is attached.

More specifically, the flat harness 4 is equipped with a fixing member 11 having mounting holes 12 on both sides and a hooking member 13 having hooking holes 14 on both sides.
Further, the storage box 7 is integrally provided with a cover 7a. The front side of the storage box 7 is provided with a front insertion hole 8 and a mounting pin 15 also serving as a positioning, and the rear side is provided with a rear insertion hole 9 and a sliding member 16 which is a separate body.

In the first embodiment having the above-mentioned structure, first, the fixing member 11 and the hooking member 13 are attached to the flat harness 4 at appropriate intervals. Then, after the sliding member 16 is attached to the rear insertion hole 9 of the storage box 7, the flat harness 4 is arranged in the storage box 7 with the slack portion 6 extending from the rear insertion hole 9 to the front insertion hole 8. . At this time,
The spring 10 is hooked between the hooking hole 14 and the mounting pin 15, and the mounting hole 12 of the fixing member 11 is inserted into the mounting pin 15. Then, after the storage box 7 is covered with the cover 7a and the storage box 7 is mounted on the vehicle body 3, the assembly of the movable wire harness 1 is completed. Therefore, during the above-described assembling work, waterproof work of penetrating the flat harness 4 is not required at the opening / closing portion between the back door 2 and the vehicle body 3, and the work efficiency can be improved.

Next, as shown in FIG. 3, when the back door 2 is pivoted rearward about the hinge 5 and opened, the flat harness 4 is pulled rearward, so that the flat harness 4 in the storage box 7 is pulled. Is sent to the outside. At this time,
While the spring 10 is pulled and extends, the flat harness 4 between the back door 2 and the storage box 7 is not loosened. Further, as shown in FIG. 2, when the back door 2 is pivoted forward and closed, the spring 10 urges the flat harness 4 forward, so that the spring 10 is loosened during operation and the back door 2 and the storage box 7 or There is no possibility of being pinched by the vehicle body 3 and being damaged or broken. Further, in the closed state of the back door 2, the spring 10 is in the original state and the flat harness 4 is not pulled more than necessary, so that the life of the flat harness 4 and the spring 10 is extended, and the reliability of the movable wire harness 1 is increased. Can be improved.

Next, a second embodiment of the movable wire harness of the present invention will be described with reference to FIGS. 4 and 5. FIG. 4 is an explanatory longitudinal sectional view showing a second embodiment of the present invention, and FIG.
[Fig. 5] is an operation explanatory view in Fig. 4. The second embodiment is different from the first embodiment in that the bellows molding portion 2 is formed in a part of the flat harness 4 in front of the rear insertion hole 9 in the storage box 7.
5 is provided. Therefore, the same parts are denoted by the same reference numerals and detailed description thereof is omitted. As shown in FIGS. 4 and 5, in the movable wire harness 20, the bellows molding portion 25 is provided in a part of the flat harness 24. Therefore, when the back door 2 is opened, the bellows molding portion 25 of the flat harness 24 itself extends, so that the tension amount of the spring 10 (movement amount of the fixed point P) becomes small. Since the pulling force of the flat harness 24 is also reduced, the life of the flat harness 24 and the spring 10 is further extended, and the durability and reliability of the movable wire harness 20 can be further improved.

Next, a third embodiment of the movable wire harness of the present invention will be described with reference to FIGS. 6 to 8. FIG.
8 is an assembly perspective view showing a third embodiment of the present invention, FIG. 7 is a vertical cross-sectional explanatory view in FIG. 6, and FIG. 8 is an operation explanatory view in FIG. The third embodiment differs from the first embodiment in that as shown in FIGS. 6 and 7, the roller-shaped fixing bar 31 is provided at the two bent portions 6a of the flat harness 4 in the storage box 37. And movable bar 32 that can move back and forth
Is provided. Therefore, in the movable wire harness 30, guide grooves 38, which are guide portions for guiding the core portion 33 of the movable bar 32, are additionally provided on both side walls of the storage box 37. Also, this guide groove 38
The core portion 33 protruding from the both side walls of the storage box 37 is provided with a hooking hole 34 for hooking the tension spring 10. Further, mounting holes 3 for hooking and attaching the other end of the spring 10 to the front portions of both side walls of the storage box 37.
5 are provided. Therefore, the same parts are denoted by the same reference numerals and detailed description thereof is omitted.

In the third embodiment having the above-described structure, first, the core portion 33 of the movable bar 32 is installed in the guide groove 38, and the fixed bar 31 is fixed above the rear part of the storage box 37.
The flat harness 4 is routed through the rear insertion hole 9. Further, the movable bar 32 and the fixed bar 31 are bent to be routed to the front insertion hole 8 while forming the slack portion 6, and fixed to the front insertion hole 8 by the door side connector 17. Then, the spring 10 is hooked in the hooking hole 34 and the mounting hole 35, and finally the vehicle body side connector 18 provided at the tip of the vehicle body side wire harness 19 is connected to the door side connector 17.
And the assembly is completed. Therefore, during the above-described assembling work, the waterproof penetrating work of the flat harness 4 is not required at the opening / closing portion between the back door 2 and the vehicle body 3, and the work efficiency can be improved.

As shown in FIG. 8, the back door 2 has a hinge 5.
When the flat harness 4 is pivoted rearward about and is released, the flat harness 4 is pulled rearward, so that the flat harness 4 in the storage box 37 is also fed outward. At this time, the spring 1
0 is pulled and extended together with the movable bar 32, and the flat harness 4 between the back door 2 and the storage box 7 is not loosened. Next, as shown in FIG. 7, when the back door 2 is pivoted forward and closed, the spring 10 urges the flat harness 4 forward together with the movable bar 32, so that the back door 2 is loosened during operation and loosened. It is not pinched by the storage box 37 or the vehicle body 3 and is not damaged or broken. Further, when the back door 2 is closed, the spring 10 is returned to the original state, and the flat harness 4 is not pulled more than necessary, so that the life of the flat harness 4 and the spring 10 is extended, and the durability of the movable wire harness 30 is increased. The reliability and reliability can be improved.

Further, since the front end of the flat harness 4 is fixed by the door-side connector 17, the displacement amount of the movable bar 32 when the back door 2 is opened corresponds to the feeding amount of the flat harness 4 (movement amount of the fixed point P). It will be halved.
Therefore, the displacement amount of the spring 10 is reduced and the tensile force of the flat harness 4 is also reduced, so that the life of the flat harness 4 and the spring 10 is further extended, and the durability and reliability of the movable wire harness 30 can be further improved. it can.

Next, a fourth embodiment of the movable wire harness of the present invention will be described with reference to FIGS. 9 to 11. FIG. 9 is an assembly perspective view showing a fourth embodiment of the present invention, and FIG.
9 is a vertical cross-sectional explanatory view in FIG. 9, and FIG. 11 is an operation explanatory view in FIG. The difference between the fourth embodiment and the third embodiment is that in the movable wire harness 40,
The positions of the fixed bar 31 and the movable bar 32 are different in the storage box 47, and the movable bar 42 is an elastic member.
It is a point urged forward by 9. Along with that, a guide groove 38 which is a guide portion in the storage box 47.
The guide rod 43 is provided in front of the movable bar 42 so as to prevent the spring 49 from buckling as the position changes. The guide rod 43 is configured so as to slidably project from the front wall of the storage box 47, and even one spring 49 can sufficiently function. Therefore, the same parts are denoted by the same reference numerals and detailed description thereof is omitted.

As shown in FIG. 11, in the movable wire harness 40, when the back door 2 is pivoted rearward about the hinge 5 and opened, the flat harness 4 is pulled rearward, so that the storage box 47 in the storage box 47 is retracted. The flat harness 4 is also extended outward. However, since the direction of the flat harness 4 is reversed by the fixed bar 31, the spring 49 is compressed forward together with the movable bar 42. At this time, the back door 2
The flat harness 4 between the storage box 47 and the storage box 47 is not loosened.

The present invention is not limited to the above-described embodiment, but can be implemented in other modes by making appropriate changes. For example, although the storage boxes 7, 37, 47 are provided on the vehicle body 3 side in the present embodiment, they can be provided on the back door 2 side. Also,
In this embodiment, the movable wire harnesses 1, 20, 3
The flat harnesses 4 and 24 have been described as 0 and 40, but the flexible printed circuit (F
It is also possible to replace with PC). Further, in the present embodiment, the hatch back door is assumed as the back door 2, but the present invention can also be applied to a door that opens and closes to the side like a front door.

[0034]

As described above, according to the movable wire harness of the present invention, the storage box having the front insertion hole and the rear insertion hole in the traveling direction of the vehicle body is provided on either the vehicle body or the opening / closing body. The flat harness is inserted into the insertion hole in a state where the slack portion is formed in the storage box, and a tension elastic member for urging the flat harness in the storage box to one side is provided. Therefore, since the waterproof penetrating work of the flat harness at the opening / closing portion between the opening / closing body and the vehicle body is eliminated, the work efficiency in the manufacturing process can be improved. Further, since the pulling elastic member for urging the flat harness in the storage box to one side is additionally provided, it is surely prevented that the flat harness is loosened and caught in the opening / closing portion or broken when the opening / closing body is closed. .
Further, in the closed state of the opening / closing body, the elastic member is in the original state and the flat harness is not pulled more than necessary, so that the durability and reliability of the movable wire harness can be improved.

Further, when the bellows molding portion is provided on at least a part of the flat harness, the flat harness itself expands, so that the amount of tension of the flat harness by the elastic member can be small and the durability and reliability of the movable wire harness can be reduced. Can be further improved.

A storage box having a front insertion hole and a rear insertion hole with respect to the traveling direction of the vehicle body is provided on either the vehicle body or the opening / closing body, and the flat harness forms a slack portion in the storage box. In the state, a roller-shaped fixed bar that is inserted into the insertion hole and is supported by one bent part of the slack in the storage box, and a roller-shaped movable bar that can move back and forth in the storage box are provided. An elastic member is provided for urging the bar to one side in the storage box. Therefore, since the waterproof penetrating work of the flat harness at the opening / closing portion between the opening / closing body and the vehicle body is eliminated, the work efficiency in the manufacturing process can be improved. In addition, since the movable bar moves as the flat harness is fed when the opening / closing body is opened, the tensile force of the elastic member urged by the flat harness can be small, and the durability and reliability of the movable wire harness can be reduced. Can be further improved.

Further, since the elastic member is a tension or compression spring, tension is always applied to the flat harness via the movable bar, and when the opening / closing body is opened / closed, the flat harness is loosened and caught. Since it is not caught, the durability and reliability of the movable wire harness can be improved.

Further, since the movable bar is held so as to be movable back and forth by the guide portion provided facing the side portion of the storage box, the movable bar can be moved more smoothly and the flat harness can be twisted. Since it does not occur, the durability and reliability of the movable wire harness can be further improved.

Further, since one end of the flat harness bent in the storage box is fixed, the movement of the movable bar with respect to the feeding of the other end of the flat harness can be reduced, so that the reliability of the movable wire harness is further improved. Can be made.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a first embodiment of a movable wire harness of the present invention.

FIG. 2 is a longitudinal sectional view in FIG.

FIG. 3 is an operation explanatory view in FIG. 2;

FIG. 4 is a longitudinal sectional view showing a second embodiment of the movable wire harness of the present invention.

FIG. 5 is an operation explanatory diagram in FIG. 4;

FIG. 6 is an assembled perspective view showing a third embodiment of the movable wire harness of the present invention.

FIG. 7 is a longitudinal sectional view in FIG.

FIG. 8 is an operation explanatory diagram of FIG. 7.

FIG. 9 is an assembled perspective view showing a fourth embodiment of the movable wire harness of the present invention.

10 is a vertical cross-sectional view of FIG.

11 is an explanatory diagram of the operation in FIG.

FIG. 12 is an exploded perspective view showing an example of a conventional door wire harness.

13 is an assembled perspective view of FIG.

FIG. 14 is an assembled perspective view showing an example of another conventional wire harness for a door.

[Explanation of symbols]

 1,20,30,40 Movable wire harness 2 Back door (opening / closing body) 3 Vehicle body 4,24 Flat harness 5 Hinge 6 Slack part 6'Bent part 7,37,47 Storage box 8 Front insertion hole 9 Rear insertion Hole 10,49 Spring (elastic member) 11 Fixing member 25 Bellows molding part 31 Fixed bar 32,42 Movable bar 38 Guide groove (guide part)

Claims (6)

[Claims] 1. A wire harness having a slack portion near the hinge of a flat harness that is pierced between an opening / closing body that is rotatably supported by a hinge connection and is opened and closed, and a vehicle body. A storage box having a front insertion hole and a rear insertion hole with respect to the direction is provided on either the vehicle body or the opening / closing body, and the flat harness is formed in the storage box with the slack portion formed. A movable wire harness which is inserted through the insertion hole and is provided with a tension elastic member for urging the flat harness in the storage box to one side. 2. The movable wire harness according to claim 1, wherein a bellows molding portion is provided on at least a part of the flat harness. 3. A wire harness having a slack in the vicinity of the hinge of a flat harness that is pierced between an opening / closing body that is rotatably supported and opened / closed by a hinge connection and the vehicle body. A storage box having a front insertion hole and a rear insertion hole with respect to the direction is provided on either the vehicle body or the opening / closing body, and the flat harness is formed in the storage box with the slack portion formed. A roller-shaped fixed bar that is inserted into the insertion hole and is supported in one bending portion of the slack portion in the storage box, and a roller-shaped movable bar that is movable back and forth in the storage box are provided, A movable wire harness, wherein an elastic member for urging the movable bar to one side in the storage box is provided. 4. The movable wire harness according to claim 3, wherein the elastic member is a tension or compression spring. 5. The movable wire harness according to claim 3, wherein the movable bar is held so as to be movable back and forth by a guide portion provided facing a side portion of the storage box. 6. The movable wire harness according to claim 3, wherein one end of the flat harness bent in the storage box is fixed.